In average severe windfall occurs every 7th year, last three times 1999, 2005 and 2013, and the average severe windfall affects 10% of the country – 4500km2. The purpose of the tender is to create the necessary high quality ortho photos in digital form in the event of a windfall, so it is possible to determent the amount of fallen trees. For this the supplier needs to make ortho photo with a pixel value of 12,5cm and a ground sample distance (GSD) in original images of 16 cm or higher e.g. 10cm. Metrological problems must be minimized in the best possible way.

In average severe windfall occurs every 7th year, last three times 1999, 2005 and 2013, and the average severe windfall affects 10% of the country – 4500km2. The purpose of the tender is to create the necessary high quality ortho photos in digital form in the event of a windfall, so it is possible to determent the amount of fallen trees. For this the supplier needs to make ortho photo with a pixel value of 12,5cm and a ground sample distance (GSD) in original images of 16 cm or higher e.g. 10cm. Metrological problems must be minimized in the best possible way.